Although graduates of Head Start programs tend to show immediate IQ gains, these increases do not last.
尽管“启智计划”的毕业生往往会显示出智商的迅速提高，但这种提高并不会持续太久。
长久。好的境遇不长。
图书不能永久保存。
Small tweaks here and there do not last for long.
各处的小调整不会持续太久。
But they do not last long under the subterranean pressure.
但是它们在地下的压力下撑不了多久。
This is in an industry where most marriages do not last long.
娱乐业是婚姻大多数并不长久。
Tornadoes do not last long, anywhere from 20 seconds to an hour.
龙卷风持续时间很短，在任何地区都是从二十秒到一小时不等。
O We all have happy and unhappy moods, feelings do not last forever.
我们能有幸福和不幸福的情绪，感觉不会永远持续。
Protection grade; Indoor using, submerged in water do not last for long.
防护等级；室内使用，不可长期浸在水中。
Stupors, however, do not last for ever, and Farmer Oak recovered from his.
然而，麻木是不会无止境地延续下去的，农夫奥克已从麻木中醒来。
In people with healthy immune systems, these symptoms do not last more than about a week.
在具有健康免疫系统的人身上，这些症状的持续不会超过一个星期。
Thankfully recessions do not last forever, either-and Ireland's may already have come to an end.
幸运的是经济衰退并不会一直持续下去，并且爱尔兰的经济衰退可能已经临近尾声。
Mild steel is the natural choice for a stove chassis, but such stoves do not last for more than a few weeks in the field.
软钢是炉具底盘的天然选择，但是这种炉子在野外无法熬过几个星期。
Of course, balloons do not last as long as conventional power stations (each is estimated to have a working life of about a year).
当然，气球不会和传统发电站寿命一样长（每只估计有一年的工作寿命）。
For certain areas, if you have a lot of clay in your soil, you may find that bulbs do not last a long time for you, as in just a couple years.
对某些特定地区来说，如果土壤很黏，你会发现鳞茎植物活不了太久，最多几年时间。
Of course, balloons do not last as long as conventional power stations (each is estimated to have a working life of about a year). But the fuel (sunlight) is free.
当然，太阳能气球的寿命不会和传统发电厂一样，一颗太阳能气球的寿命大约一年，但是燃料(太阳能)却完全免费。
In theory, booms in elastic markets do not last for long because as new housing becomes available it puts pressure on prices, puncturing expectations of further appreciation and popping the bubble.
理论上，弹性市场的繁荣不会持续很长时间，因为随着新屋入市，价格会产生下行压力，从而抑制涨价预期并挤压泡沫。
We do not want to see a repetition of last year's tragic events.
我们不想看到去年的悲剧重演。
Last, if we stirred up our brains and gave children a little help, those who did not want to go to school could find other things to do—things many children now do during their holidays.
最后，如果我们开动脑筋，给孩子们一点帮助，那些不想上学的孩子可以找到其他事情做——现在很多孩子在假期里都会做这些事情。
At last, after several blocks of walking, she felt that this would not do, and began to look about again, though without relaxing her pace.
最后，走了几条街以后，她觉得这样不行，于是又开始东张西望，不过并没有放慢脚步。
The last Not-to-Do is asking a lot of questions or pressing for details about the death.
最后一件不要做的事情便是问一大堆问题或追问有关死亡的希捷。
Do not attempt to manually set either of these last two states.
不要尝试手动设置这两种状态。
As mentioned earlier, the key here is that you do not want to actually delete the last Item.
正如前面提到的，此处的关键在于您并不希望实际删除最后一个项目。
Try to attend regular class so that you do not face any last minute pressure.
尽量参加每一堂课，这样你就不会在期末的最后一刻不知所措了；
Red tides and similar blights do not necessarily last long, nor do they cover much of the surface of the sea.
赤潮和类似的损害不是必然地持续很久，也不是必然会覆盖大量的海面。
Well-understood methods can reduce the strain that large downloads create on the core network, even if they do not help with the last mile.
有一些成熟的方法可以减轻大量下载对核心网络造成的压力，尽管这些方法无法提高玩家使用的连接速度。
Use last names with people you do not know: Address people using their title (Mr, Ms, Dr) and their last names.
对不认识的人要称呼他们的姓：用他们的头衔(先生、女士、博士等)加上他们的姓。
Use last names with people you do not know: Address people using their title (Mr, Ms, Dr) and their last names.
对不认识的人要称呼他们的姓：用他们的头衔(先生、女士、博士等)加上他们的姓。
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